RTL support refers to the ability of an application or a website, like a printing site, to respond to users who use right-to-left languages for communication. The right-to-left languages include Hebrew, Chinese, Japanese, Arabic, etc. All written things like newspapers, billboards, and mobile texts in these languages are written right to left.
So, the people used to RTL languages expect to have the same standards applied to their websites. Therefore, while building a print site, you must also make sure that it is multilingual and has RTL support. This will allow the user to convert the whole layout into RTL format.